Receptacle Tester with GFCI Alert Type Light CAT Safety Rating Not Rated Display Screen Type No Display Display Type No Display Features Easy-to-Read Fault Label on Both Sides for Receptacles with Ground up or Ground Down Installation For Voltage Range 110 to 125V AC Frequency Rating 60 Hz Includes GFCI NEMA Plug Configuration 5-15P Tester Type Receptacle Wiring and GFCI Tester Testing Functions GFCI Wiring Faults